18" LifeStages A.C.E. Double Door Dog CrateSize: 18. 875 L x 13 W x 14. 25 H in 48 x 33 x 36. 2 cm LifeStages ACE Double Door Crate Intuitive Innovation from MidWest Homes for Pets! The LifeStages ACE Double Door Dog Crate gives your dog a safe and cozy place to retreat and serves as a valuable tool for housebreaking, puppy training, and travel. LifeStages ACE comes with the amenities of a traditional two door wire crate with the added convenience and security of the MAXLock Door System.